If they want to enhance the merit strategems they can start by making them consume only a single strategem. I'd mind less about spending 2 Strategems on them if they were actually worth using.

Focalization / Altruism: Why? Just use Klimaform, storm spells and the right gear. If your accuracy sucks bad enough to waste 2 charges on it, it's probably not worth casting.

Tranquillity / Equanimity: Or... you could just cast Pax on yourself and not bother wasting charges you could use to enhance it via Rapture or Ebullience.

Truthfully, I might have a reason to merit all of the above if it wasn't so costly to actually use them. Considering the niche use for these strategems, its hard to justify using up 2 charges on them, even with the 5 charges we get at 95+

I definitely approve of the adjustments to WHM's Protectra/Shellra though. Protect/shell spells need a major buff across the board in my humble opinion.